SFV: Dash Cancel ( dash to dash )

I feel like I have observed something when practicing my dashes, and I wanted to ask if it is true. I am referring here to standard dashes from a double-tap of the stick left or right ( not a command dash ).

Basically, when I am dashing it feels like I can cancel my dash with another dash. That is, if I quickly input the dash motion twice, I will start a second dash before I would normally end my dash.

Why does this matter? It matters because I am trying to learn my dash timing, and I want to know if that timing is different when I am ending with another dash, as opposed to a normal. I assume that all normals become available at the same time after a dash.

OK, but is the buffer length different for another dash than for a normal? The timing feels different to me. I feel like I can do a second dash way sooner than I can do a normal button ( if I press a button at that time, nothing happens, I need to wait longer ). Maybe it's just my perception though....?